Power-transmitting means



Dec. 6, 1927. 1551997 E. E. CLARK I I POWER TRANSMITTING MEANS Filed Aug. 5, 1926 HLLLILETW INVENTOR. EMEP YE CLARK Q: 4

A TTORNE Y.

Patented Dec. 6, 1927." V v EMERYE. e'LAQitx, or 'i'oPE'KA, Kansas.

' POWER-TRANSMITTING ANS.

Application filed. august 3, 192 se ial No. lea-emf My invention relates to a 1)owerti'a11 s mitting means. 'The object of my" invention to provide a reciprocating means continuously: driving the shaft in one direction. p r I 1k further object of my invention is to exercise a long or short stroke which optional. with the operator.

A stillirfurther 01 yet of my invention to provide a pawl having'its pivotal'b earing in a socket. I 7 z Alstill further objectfof my invention. is to house the ratchet and pawl in a silencing means. l v I Y I A still further object of my invention is to provide adjustable tensioning means for the belts.-

These and other objects will be, herein-- after more fully explained.

. like.

Referring to the drawings: V I

Fig. l: is an elevation. of thedevice. I r Fig. 2. is an invertedplan View of Fig. 1. Fig. 3- is an enlarged side View of the pulleys, parts removed for convenience illustration.

Fig. A is a-transverse view of Fig. 3 taken along line 4L4, looking in the direction of the arrow. i

The mechanism herein disclosed consists of a pair of pulleys 1 and 1; the said pulleys being mounted on a shaft 2 as a power trans: mitting means for vehicles, line shafts or the The said pulleys are provided with flanges 3 as means to prevent the belts 4: and 4 from runningolf while inaction.

As a convenient position to rotatethe pul- I leys I have placed them snuglytogether enof the pulleys during their 7 applied to both.

gaging on a separator 5 and preferably'made of brass to prevent unusual wear ofthe sides rotations which are in opposite directions. Each ofthe said pulleys is attached in position on the shaft by means of a collar 6 havinga set-screw 7 threadedly engaging through the collar to contact firmly with the shaft, one collar being on each side of the pulleys as shown in Fig. 4. I

Between the collars and sides of the pulleys I have placed washers 8 for the purpose hereinafter described. It will be under stood that the two pulleys are made alike, the reference characters however will be concentrically positioned within the pulley is a ratchet member 9 the said member having a key-way diametrically posi;

' ioned iniboth-sides thereof and adapted; to

engage with P lvhi h] re rigidlyiat taehed to the shaft as means for rotating-the sl e l sepals rev lr nt e r t o of-the arrow as shown in Fig. 3.

- Housed within the shell-A of t e pane is a pawl; 12 havingian dge Badapt'ed to engage with teeth (3 of the ratchet The a w b les i l th qua tQ-t e thick ness of: the ratchet me nber, the opposite side of the pawl fron ithe tooth being round asat D has its bearing in an aperturewhich is bored transversely to the shell ofthe pu ll ey.- The shell is also cut away suflieient for the reciprocations, of the pawl to rock while. passing over the teeth of theratchet The said pawL is tensionedby a spring 18 whichengages. in an aperture through theshell and compressed by a set screw 14g threadedly en.- as ns-in the apertu e by wh ch m an h tension of the spring may be variech The S i se is show r e es bu Will} be drlven fluslrwith. the face of the pulley for correct engageinent.

The diameter of thelr atchet over the teeth is slightly smallerthanjthe diameter! offthe bore through the pulley to avoid ifllCtlOIl between the teeth and the shell. As a means to support the pulleys in working relation to the ratchets I have providedannular mem bers 15, one being on each side of the pulleys and flush therewith fitting snuglyperipherally in the bores thereof. a The said members function as bearings for rotatable'engagement ofthepulleysonthe shaft. As a means Y for aligned, registry of the side of the pulley and the annular memberI have provided a washer8 of suiiicient diameter to lap well on to the side of the pulley over the joint. The

said washer also functions as supporting means for a square like member 16 adapted to close the opening in which the pawl functions preventing said pawl from lateral movement, but providing suiiicient play. forfree movement. to engage with the teeth of the ratchet which is .accomplished by saidmember seating in the pulley as at E.

Itwillbe understood that the members 15 and 16 are supported inposition by the close engagement of the pulleys as shown in Fig. 4.

As a means :for tensioning and manipulating the belts 4 and 4"1 have provided a tensioning member 17, the rear end being returned by a curve and the front end having a curved member 18, both of said members tunctioning as spacing means for clearance of the spring above the pulleys; the rear end being provided with elongated slots 19 having bolts 20 engaging thercthrough to vary the tension of the belts. The said bolts simultaneously engagethrough said slots and through apertures in a bar 21 as clamping means for the ends of the belts. The opposite or front end of the belts are clamped between the curved end of member 18 and the spring member as at G.

i It is now readily seen how the belts are tensioned tightly on the pulleys to prevent slipping asthe spring member reciprocatcs longitudinally by rocking a lever 22 the end of which is bifurcated and pirotally connected as at 23 to an outwardly extending web 2% which firmly attached to a spring member. The said lever is pivot-ally attached as at to a support 26 the said support being positioned in accordance with the mechanism on which the device functions. The oppositeor rear end of the lOllI-ilOIlllig meih'iber is fastened to the belts.

To operate my power transmitting means rotating the shaft 2 in one contii'iuous dircction while the spring member reciprocatcs longitudinally I wind the belts once around their respective pulleys in opposite directions so that when the spring member is driven forward the belt it will rotate the shaft in the direction indicated by the arrow in Fig. 1. hen driven rearward the belt t will rotate pulley 1 in the same direetion continuousty rotating the shaft. The length of the strokes may be varied without interlapping the ratchets of the pulleys. The spring belt tensioning member is shown as being made a single piece of metal having attaching means thereon. I do not confine this to be made as illustrated as other materials may be used providing a spring, tensioning the belts in other ways.

Such other modifications may be employed as lie within the scope of the appended claim.

Having thus described my invention, what- I claim as new and desire to secure by Letters Patent is In a power transmitting means, a pair of ratchets rigidly connected to a shaft, annular members abutting the ends of the ratchet members, apeir of pulleys trunnioned on the annular memhersi, means for aligning the pulleys and the annular members, pawls roclrahly mounted in the pulleys to engage with the ratchets, springs tensioning the pawls, belts wound on the pulleys so that the extended ends of thebelts will be from opposite sides oi the pulleys, a tensioning memhe' adapted to receive the ends of the belts converging to the connection with their tcnsioning member so that by longitudinal rcciprocations of said member the belts will rotate the pulleys in opposite directions For continuous rotation of the shaft in one direction. a lever connected to one end of the tenshining member as reciprocating means therefor the opposite end of said tensioning means heing carried by one of the belts.

EMERY E. CLARK. 

